Process of making reinforced parper boxes.



J. P. WRIGHT & C. A. CARLSON. PROCESS OF MAKING REINFORCED PAPER BOXES.APPLICATION FILED JUNE 26. 1917.

1 ,258,294:. Patented Mar. 5, 1918.

STATES PATENT OFFICE.

JACOB P. WRIGHT AND CARL A. OARLSON, OF BARBERTON, OHIO, ASSIGNORS TOTHE DIAMOND MATCH COMPANY, .OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS.

' Specification of Letters Patent.

Patented Mar. 5, 1918.

. Application filed June 26, 1917. Serial No. 176,940.

To all whom it may concern:

Be it known that we, JACOB P. WRIGHT and CARL A. CARLSON, both citizensof the United States, and both residents of Barberton, in the county ofSummit and State of Ohio, have invented certain new and usefulImprovements in Processes of Making Reinforced Paper Boxes, of which thefollowing is a specification.

he ob ect of this invention is to provide a simple, eficient' andeconomical process of making rectangular paper .or paste-board boxeshaving their walls reinforced and strengthened by inturned integralfolds or extensions of the material of which the bodies of the boxes arecomposed.

In carrying out the invention in the preferred way we provide a strip ofbox material equal in width, plus reinforcing side flaps or folds, toordinary box stock, whichstr1p is drawn from a suitable roll andsubjected to the progresslve operations illus-- trated in the annexed.drawlngs, where1n Figure 1 is a plan of a portlon of a strip ofbox-stock which has been subjected to glue-applying, scoring, punchingand sidefolding operations preparatory to the severance of a box-blankfrom the body of the strip. 30

Fig. 2 is a plan of the severed blank. 7

Figs. 3, 4, 5 and 6 illustrate successive conditions of the blank duringthe box-forming operation.

Fig. 7 represents the finished box.

The strip of box material A is drawn from a suitable roll in thedirection indicated by the arrow. As the strip progresses it is suppliedat predetermined intervals with surface lines or spots of glue, as at a,It'is then longitudinally scored on parallel lines I), c whichrespectively define the fold lines of the side walls of the box and ofthe reinforcing folds thereof. Longitudinal parallel shts, as d, areformed in the body of the strip, at regular spaced. intervals in thelength of the strip, and substantially rectangular recesses, as at e,having their basal edges in spaced arallel relationto tne slits areformed in t e longitudinal edges of the strip; the inner corners of therecesses being notched or incut parallel to the slits. Such slits,recesses and notchesdefine the reinforcing laps 7, corner tongues g, andend folds k for succeeding boxes. The

side laps, f, thus produced are folded inwardly upon and glued to themain side portions of the strip asindicated at i. The strip 1s thentransversely scored on the lines j and It to provide fold lines for theend andcorner portions of the box. The strip is then transverselysevered midway between the ends ofthe succeeding side folds as on theline Z, thus producing a box blank having two-ply side portions, endextensions 72.

from the side folds, and end extensions m from the bottom, as shown inFig. 2.

The two-ply side ortions of the strip are then, bent upward a ong thebasal fold line has indicated in Fig. 3, and each pair of end extensions11. are then turned inwardly on the fold lines is, at. right angles tothe upstanding sides, so as to overlap, as shown in Fig. 4. The tongues9 being flexed by the inward folding of the end extensions reinforce thecorners of the box. The bottom extensions m are then turned upward onthe fold hnes k as indicated in Fig. 5. The upper portions, rising abovethe .inturned extensions h, are then turned inwardly on the fold lines7', as seen in Fig. 6, and folded down against the inner sides of theend' extensions h and the corner tongues, as seen in Fig. 7. At the sametime the inturned side and end folds are pressed hard against theadjacent surfaces of the structure so as to insure the effective unionof the contiguous parts. We claim 1'. A process of making reinforcedboxes which comprises forming in the body of a stri of box material, atspaced intervals in the length of the strip,pairs of longitudinalparallel slits; formin in the respective lonmedially of the slitted andrecessed portions Y of the strip, thereby forming successive box blanks.

2. A process of. making reinforced boxes which comprises forming in thebody of a strip of box material, at spaced intervals in the length ofthe strip, pairs of longitudinal parallel slits; forming in therespective longitudianl edges of the said strip recesses having theirbasal edges in spaced parallel relation to the slits and having theirinner corners incut parallel to the slits, thereby providing pairs ofside laps alternating with the pairs of slits and having end tongues;folding said laps and their tongues upon and securing them to theadjacent portions of the strip; and severing the strip on transverselines medially of the slitted and recessed portions of the strip,thereby forming successive box blanks.

3. A process of making reinforced boxes Which comprises forming in thebody of a strip of box material, at spaced intervals in the length ofthe strip, pairs of longitudinal parallel slits; forming in therespective longitudinal edges of the said strip recesses having theirbasal edges in spaced parallel relation to the slits; thereby providingpairs of side laps alternating with the pairs of slits; folding saidlaps upon and securing them to the adjacent portions of the strip;severing the strip on transverse line medially or" the slitted andrecessed portions the strip to form successive box blanks; and,.finally, bending and uniting the lateral and neaaeee end portions ofthe blanks to provide boxes having reinforced sides and ends.

i. A process of making reinforced boxes Which comprises forming in thebody of a strip of box material, at spaced intervals in the length ofthe strip, pairs of longitudinal parallel slit-s; forming in therespective longitudinal edges of the said strip recesses having theirbasal edges in spaced parallel relation to the slits and having theirinner corners incut parallel to the slits, thereby providing spacedpairs of side laps alternating with the pairs of slits and having endtongues; folding said laps and their tongues upon and securing them tothe adjacent portions of the strip; severing the strip on transverselines medially of the slitted and recessed portions of the strip to formsuccessive box blanks; and, finally, bending and uniting the lateral andend portions of the blanks to provide boxes having reinforced sides,ends and corners.

Signed at Barberton, in the county of iumrnit and State of @hio, this23rd day of Jane, A. 191?.

ilACOB F. 'WREGHT. CARL A. GARLSON.

